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# Sam, whose mass is 80.0 kg, takes off down a 55.0 m high, 10.0^\circ slope on his jet-powered skis. The skis have a thrust of 220 N. Sam's speed at...

Sam, whose mass is 80.0 kg, takes off down a 55.0 m high, 10.0^circ slope on his jet-powered skis. The skis have a thrust of 220 N. Sam's speed at the bottom is 40.0 {rm m/s}. What is the coefficient of friction of the snow?